And for the life of me, I can’t figure out why it is not working. I created the webhook and then clicked on “Test” and it gave me an error status 400 from industrial.api.ubidots.com.
In my application if, instead of using UBI_PARTICLE when defining my ubidots, I use UBI_HTTP, my code works perfectly fine.
Here is my simple code to test it:

@jotathebest, I have managed to fix the issue. Apparently, the test feature, used to validate a webhook in the Particle Console, doesn’t work with Ubidots. Once I ignored that and actually tested it, it worked fine.